I am new to Winlog 3.1 and I have watched your tutorials on youtube to have a general idea how it works. The problem is that I have connected a device, which works with rs 232 port to measure the water level via a sensor. The device is connected to the notebook through a usb data adapter. I made a test in the Modbus RTU and it seemed to had a connection but then had read errors 1 2 3 etc.

The device is a data-logger and works with Minilog Software (similar to Winlog 3) but I wanted to connect and read out the data with Winlog 3.I am sending you the Project in zip file and the link of Minilog for more info (Manuali > VEDO/MINILOG/MYLOG):